chronic recording;
fine-wire;
hippocampus;
magnet;
mouse;
single unit;
sleep;
D O I:
10.1016/S0168-0102(99)00106-6
中图分类号:
Q189 [神经科学];
学科分类号:
071006 ;
摘要:
We report here a newly developed chronic implantation technique using an epoxy-coated fine-stainless steel wire (33 mu m in diameter) to record single unit activity from the brain of freely-moving mice with as little tissue injury as possible. Since the fine-wire electrode is not capable of staying straight by itself or of penetrating into the brain, a pair of permanent neodymium magnets placed on a micromanipulator as well as below the animal's head was used for stereotaxic implantation to keep the fine-wire straight and strong by the magnetic fields. With those implanted electrodes recording of single units from the hippocampal CAI of freely-moving mice was performed during sleep and wakefulness. (C) 2000 Elsevier Science Ireland Ltd. All rights reserved.